Question

A particular transmitter of a radio statioin broadcasts at 422.5 m wavelength.Calculate the frequency at which the radio station broadcasts its programme.(Given, the speed of radiowave is 3 x 10 to the power of 3)m/s.Answer needed urgently. pl help. Thanks !S.Ramya S.

Answer 1

to the power of 3? Could you check that?

Answer 2

Hmm... I think we're off by a factor of a few here?

Answer 3

You can calculate the frequency with the following formula:
\[f=v/\lambda\]
Where f - frequency, v - speed of the wave, lambda - wavelength

Answer 4

we know that \[f=v/\lambda\]
\[\lambda=422.5 m\]
\[v=3*10^3\]
so f would be
\[7*10^3\]

Answer 5

Shouldn't v be closer to 3 * 10^8?

Answer 6

it should be!!!!

Answer 7

Gogind : Deuter : Few Screws missing :
It is 10 raised to the power of 3 !! Pl reply to the problem soon !
Repeating the question again for help :

A particular transmitter of a radio statioin broadcasts at 422.5 m wavelength.Calculate the frequency at which the radio station broadcasts its programme.(Given, the speed of radiowave is 3 x 10 raised to the power of 3)m/s.Answer needed urgently. pl help. Thanks !S.Ramya S.

Answer 8

Well, if it is to the power of 3 then just do what Deuter did.
The reason we think this speed is strange is that the speed of the radio waves (electromagnetic waves) is 3 *10^8 m/s, that is, the speed of light (radiowaves travel at the speed of light). The given speed kinda looks like 3*10^8, except there's that 3.

Anyways, do what Deuter did and ask your teacher to check it, I would say it is a typo.

Answer 9

should I consider deuter's answer as final?

Answer 10

Yes, if it really says 3*10^3, OR you can argue with the teacher that this makes no sense because the speed of the radio waves is 3*10^8 m/s. I would personally mention this to the teacher, but that's just me :D

Answer 11

Yes, I will, for the time being take it as an answer but will definately ask the teacher about it! thank you once again for your guidance!

Answer 12

correction:definitely

Answer 13

Thanks to Deuter and Gogind and Few Screws Missing for all your help.S.Ramya

Answer 14

I just now checked the question from the home assignment again.You are correct, It is 10 raised to the power of 8 and not 3.In fact, I just noted the error.Should I take Deuter's answer as it is now ?Pl guide.Ramya

Answer 15

No. He used 3*10^3 m\s as velocity. You must use 3*10^8 m/s, just use the formula he wrote up there to calculate the frequency. I'm sure that if you try to calculate it you will not have problems.

Answer 16

This formula... \[f = \frac{v}{\lambda}\]

Answer 17

using the formula, I am getting 710059.17 as the answer but I am not sure. Is the answer correct?

Answer 18

That's what I get too. So that's 710059.17 Hz or 710.059 kHz or 0.71 MHz

Answer 19

I am relieve! Sorry to disturb you. Many thanks! Looking forward to your help in future too! S.Ramya

Answer 20

correction:relieved